232 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



CHIM.£RA DEANI Smith and Radcliffe, new species. 

 Plate 29. 



Head short, contained 4.6 times in length from snout to beginning 

 of supracaudal fin and 2.8 times in second dorsal base; depth of body 

 slightly less than length of head; snout obtuse, upper and lower 

 profiles similar; eye large, contained 2.3 times in head, placed high on 

 side of head and inclined upward and outward, forehead somewhat 

 prominent in front of eye; lateral line nearly straight throughout. 



Dorsal spine slender, as long as head, with a few feeble serrations 

 on distal half, dorsal rays one fourth longer than spine, the tips when 

 depressed extending to opposite base of ventrals; notch separating 

 two dorsals very narrow; second dorsal highest anteriorly, where the 

 rays are 0.8 diameter of eye, 2 times length of posterior rays, and 

 more than twice length of shortest rays in the indented middle 

 section of the fin; supracaudal of same height as lowest part 

 of second dorsal, its base about three-sevenths of length of head; 

 subcaudal of same height as supracaudal, but extending further for- 

 ward ; caudal filament very long and delicate, its length greater than 

 distance from tip of snout to beginning of supracaudal; anal fin 

 lacking; ventrals pointed, the posterior border concave; pectorals 

 large and reaching well beyond the ventral base, the outer angle 

 pointed, the posterior margin slightly convex. 



Color: Entire body and fins uniform blackish brown. 



Type. — Cat. No. 72284, U.S.N.M., a female specimen 43 cm. long 

 (19.5 cm. from tip of snout to supracaudal, 23.5 cm. from beginning 

 of supracaudal to tip of filament), taken with a beam trawl on January 

 15, 1908, at station 5111 Gat. 13° 45' 15'' N.; long. 120° 46' 30" E.), 

 off Sombrero Island, west coast of Luzon, at a depth of 236 fathoms. 



This species most closely resembles C. mirahilis Collett, but differs 

 in having a smaller eye; higher first dorsal, with longer, more slender 

 spine; higher second dorsal; less extensive subcaudal; longer pec- 

 torals, different coloration, etc. 



Named for Prof. Bashford Dean, of Columbia University, in recog- 

 nition of his able studies of the chimseras. 



RHINOCHIM-ERA PACIFICA (Mitsukuri). 



The collection contains an egg capsule of a RhinocJiimsera brought 

 up in a beam trawl at station 5656 (lat. 3° 17' 40" S.; long. 120° 36' 

 45" E.), in the Gulf of Boni, Celebes, from a depth of 484 fathoms. 

 Other fishes taken at this station were Ccdorkynchus, Neoscopelus, a 

 leptocephalid, a halieuteid, and several small eels. This capsule 

 agrees perfectly with the one described as being produced by 

 R. pacifica, * heretofore known only from Japan. 



» Dean, ChimEeroid Fishes and their Development, p. 38. 



